CN100335821C - Curved teeth cylindrical gear, machining method and apparatus thereof - Google Patents
Curved teeth cylindrical gear, machining method and apparatus thereof Download PDFInfo
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- CN100335821C CN100335821C CNB2004100412972A CN200410041297A CN100335821C CN 100335821 C CN100335821 C CN 100335821C CN B2004100412972 A CNB2004100412972 A CN B2004100412972A CN 200410041297 A CN200410041297 A CN 200410041297A CN 100335821 C CN100335821 C CN 100335821C
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- cylindrical gear
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- wheel blank
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Abstract
The present invention discloses a curved tooth cylindrical gear, a processing method and a processing device thereof, which belongs to the technical field of gears. A tooth line of the curved tooth cylindrical gear is a part of a circular arc, a tooth profile is an involute or a circular arc and circumferential tooth thickness of the curved tooth cylindrical gear is equal. The processing method of the curved tooth cylindrical gear mainly comprises: when the curved tooth cylindrical gear is processed, a knife blade performs swivel motions, generating processing is carried out between the knife blade and the processed curved tooth cylindrical gear and the direction of a working reference plane of the knife blade is unchanged. The present invention also provides a processing device of the curved tooth cylindrical gear with equal tooth thickness. The present invention can realize the processing of the curved tooth cylindrical gear with equal tooth thickness, and the processed curved tooth cylindrical gear has the advantages of steady transmission pair meshing engagement, large meshing engagement coincident degree, strong bearing capacity and low noise. The curved tooth cylindrical gear can be applied to various mechanical transmission systems, and is particularly suitable for gear transmission mechanisms of high speed, heavy load and low noise.
Description
Technical field
The present invention relates to a kind of gear and processing method thereof and processing device, belong to the gear technique field.
Background technique
The arc cylindrical gear transmission has engagement steadily in theory, noise is little, characteristics such as bearing capacity is strong, receive publicity already, the arc cylindrical gear and the processing method thereof that have various kinds of document to mention at present, but prior art can not process the arc cylindrical gear that circumferential transverse tooth thickness equates, as disclosed arc cylindrical gear of patent documentation ZL90105655.3 and processing method thereof, its tooth trace is the part of circular arc, flank profil is involute or circular arc, it is by the blade that is fixed on the rotating disc wheel blank to be cut adding man-hour, blade rotates around the rotating disk axle center, can process positive circular tooth gear or oblique circular tooth gear by the distance between blade gyration center and the wheel blank intermediate cross-section; Add man-hour, the working reference plane normal direction of blade is rotated and constantly conversion with rotating disk, the arc cylindrical gear that processes with this method, its space width on the normal orientation of tooth trace circular arc equates, the normal direction groove width that is gear equates, and the circumferential groove width of gear does not wait, and the transverse tooth thickness on the circumferential direction of gear is just unequal like this.For positive arc cylindrical gear, the circumferential transverse tooth thickness of gear edge is less than the circumferential transverse tooth thickness at gear middle part, and the angle of circumference that the tooth trace circular arc comprises is big more, this unequal phenomenon is obvious more, add man-hour carrying out generating method, even can cause the both sides disappearance of curved tooth, influence the strength of gear teeth; Simultaneously, this unequal meeting causes gear easy tooth-breaking when transmission, and the engagement of gear pair is not steady, and bearing capacity is poor; At present, still there are not the arc cylindrical gear of transverse tooth thickness such as circumferential and the record of processing method thereof; Existing processing method can not process the arc cylindrical gear that circumferential transverse tooth thickness equates, so arc cylindrical gear seldom is employed at present.
Summary of the invention
One of purpose of the present invention provides a kind of arc cylindrical gear steady, that noise is little, bearing capacity is strong that meshes.
Two of purpose of the present invention provides a kind of method of processing this arc cylindrical gear.
Three of purpose of the present invention provides a kind of processing device of realizing this processing method.
One of purpose of the present invention is achieved in that a kind of arc cylindrical gear, and its tooth trace is the part of circular arc, and flank profil is involute or circular arc, and the transverse tooth thickness of arbitrary position equates on the circumferential direction of gear.
Because transverse tooth thickness thickness on the circumferential direction of gear is equal, and is the arcuation tooth trace, therefore, arc cylindrical gear transmission engagement contact ratio is big, and engagement is steady, and bearing capacity is strong; Simultaneously, it operates steadily, noise is little, and it can be applicable in the various machine driven systems, is specially adapted in the gear drive of high speed, heavy duty, low noise.
Two of purpose of the present invention is achieved in that a kind of processing method of processing arc cylindrical gear, comprises the steps:
(1) fixing wheel blank makes wheel blank make circular movement along the wheel blank axle center, and adjusts the distance of wheel blank center to knife rest according to the reference radius of wheel blank;
(2) blade that will process profile of tooth is fixed on the knife rest, make blade with plane that the wheel blank axle center parallels in do rotation motion, the rotation motion radius equals the arc tooth line radius, and blade work basal plane normal direction is remained unchanged;
When (3) blade is done rotation motion, the wheel blank rotation, knife rest or wheel blank make between wheel blank and the blade and realize generating method for tooth-cutting in the tangential feed of Gear Processing engagement place, can obtain arc cylindrical gear.
When on the intermediate cross-section that is centered close to wheel blank of blade movement track, can process positive arc cylindrical gear; When the center of blade movement track was not on the wheel blank intermediate cross-section, the arc cylindrical gear that is processed was oblique arc cylindrical gear; Therefore can realize positive arc cylindrical gear or the tiltedly processing of arc cylindrical gear by the relative position of adjusting wheel blank and blade movement track.
Three of purpose of the present invention is achieved in that a kind of processing device of arc cylindrical gear, comprise two relatively-stationary knife rest dishes in axle center, be provided with connecting rod between the knife rest dish, the connecting rod two ends are movably connected in respectively on the two knife rest dishes, connecting rod parallels with line between the two knife rest dish axle center, is fixed with at least one blade on the connecting rod.
The key that realizes transverse tooth thickness such as arc cylindrical gear is circumferential is to make blade with the rotating while of disk, and the normal direction of its blade work basal plane remains unchanged.Three of purpose of the present invention provides the device of realizing this motion, during use, make wheel blank to be processed axle center and blade movement plane parallel, blade is installed on the connecting rod, the rotating turret dish, connecting rod is done translational motion with the knife rest dish, thereby guarantees that blade work basal plane normal orientation remains unchanged, and realizes that blade equates along the cutting width on the wheel blank circumferential direction.In these cases, make and carry out generating method for tooth-cutting between blade and the wheel blank, can obtain transverse tooth thickness cylindrical gearss such as circumferential.
As the further improvement of said apparatus, described connecting rod upper edge connecting rod direction is evenly equipped with some blades.When this technological scheme can make the knife rest dish rotate, knife rest and the motion of wheel blank intercropping straight-line feed, the rotational speed of its feed speed and wheel blank has certain speed ratio, makes to carry out generating method for tooth-cutting between blade and the wheel blank.Enclose when wheel blank rotates one, each blade circumferentially cuts a complete arc cylindrical gear along wheel blank.This technological scheme makes arc cylindrical gear processing more convenient, and work efficiency improves.
For realize the processing of the tooth trace of different radius of arc on a covering device, opposite position is provided with some attachment holes that match with attachment post on the described two knife rest dishes.During use, change the attachment post position, can change the turning radius of blade rotation motion track, the radius of the tooth trace circular arc that it cuts out changes with the variation of the turning radius of blade.
Description of drawings
Fig. 1 such as is at the positive arc cylindrical gear axonometric drawing of transverse tooth thickness.
Fig. 2 such as is at the oblique arc cylindrical gear schematic representation of transverse tooth thickness.
Fig. 3 is the schematic diagram of processing method of the present invention.
Fig. 4 is a single blade gear machining equipment structural representation.
Fig. 5 is a multitool plate gear processing device structural representation.
Wherein, 1 gear hole, 2 positive arc cylindrical gears, 3 teeth, 4 teeth groove, 5 oblique arc cylindrical gears, 6 tooth traces, 7 blade movement tracks, 8 wheel blanks, 9 blades, 10 blade work basal planes, 11 knife rest dishes, 12 connecting rods, 13 attachment posts, 14 supports, 15 attachment holes, St, SC are circumferential transverse tooth thickness, and Pt, PC are circumferential spacewidth, and C-C is the intermediate cross-section of gear (or wheel blank).
Embodiment
Embodiment 1
As shown in Figure 1, positive arc cylindrical gear 2, it is a kind of form of arc cylindrical gear, the excircle of gear is provided with the tooth 3 that some tooth traces are circular arcs, gear-profile is involute or circular arc, the transverse tooth thickness of arbitrary position equates on the circumferential direction of gear, and each teeth groove 4 width on the circumference of gear direction also equate; Tooth trace is the positive circular arc along the intermediate cross-section symmetry of gear, and the place, axle center of gear is provided with gear hole 1, so that install.
As shown in Figure 2, tiltedly curved tooth cylinder arc gear 5 also is a kind of form of arc cylindrical gear, its tooth trace 6 is parts of circular arc, and flank profil is involute or circular arc, and transverse tooth thickness thickness on the circumferential direction of gear equates, be Sc=St, tooth trace 6 is along the asymmetric oblique circular arc of the intermediate cross-section C-C of gear.
As shown in Figure 3, for transverse tooth thickness arc cylindrical gear such as circumferential, it is adding man-hour, by the revolution blade wheel blank is cut, the turning radius of blade equals the radius of arc of tooth trace, but blade is along with rotation, and promptly the working reference plane method direction of blade remains unchanged, the arc cylindrical gear that processes with this processing method is that circumferential groove width equates that promptly Pt equates with Pc; Circumferential transverse tooth thickness St between two teeth groove also equates with Sc like this.Its concrete production method can comprise the steps:
(1) fixing wheel blank 8 makes wheel blank 8 make circular movement along the wheel blank axle center, and adjusts the distance of wheel blank center to knife rest according to the reference radius of wheel blank;
(2) blade that will process profile of tooth is fixed on the knife rest, make blade with plane that the wheel blank axle center parallels in make circular movement, the movement locus 7 of blade is parallel to the wheel blank axle center, working reference plane 10 normal orientation of blade 9 remain unchanged simultaneously;
When (3) blade 9 is done rotation motion, wheel blank 8 rotations, knife rest or wheel blank make between wheel blank 8 and the blade 9 and realize generating method for tooth-cutting in the tangential feed of Gear Processing engagement place, can obtain arc cylindrical gear.
When the intermediate cross-section C-C that is centered close to wheel blank of blade movement track goes up, can process positive arc cylindrical gear; When the center of blade movement track was not on the C-C of wheel blank intermediate cross-section, the arc cylindrical gear that is processed was oblique arc cylindrical gear.
As shown in Figure 4, a kind of single blade processing device of the transverse tooth thickness arc cylindrical gear such as processing circumferentially, it is processing device according to the process principle figure design of transverse tooth thickness arc cylindrical gear such as circumferential, comprise the knife rest dish 11 that two axle center fix, two knife rest dish axle center all are arranged on the support 14, be provided with connecting rod 12 between the knife rest dish 11, connecting rod 12 two ends are movably connected on the two knife rest dishes 11 by attachment post 13 respectively, connecting rod 12 parallels with line between two knife rest dishes, 11 axle center, be fixed with a blade 9 on the connecting rod 12, processing for transverse tooth thickness arc cylindrical gears such as realizing circumferentially, transverse tooth thickness such as the assurance gear is circumferential, its essence is that blade 9 moves with connecting rod 12 in working angles, but the working reference plane normal direction of blade 9 is not along with conversion.Its movement process is the rotations of two knife rest dishes, 11 constant speed, two knife rest dishes, 11 drive link, 12 translations of rotation, and connecting rod 12 drives blade 9 motions; In blade 9 working angles, wheel blank 8 rotations when knife rest moves; Between moving speed of tool post and wheel blank 8 rotational speeies definite motion speed ratio is arranged, thereby realize the generate working motion; Or wheel blank 8 is when rotating, and the worktable that wheel blank 8 is installed moves as straight line, gear rotatablely move and the straight line of worktable has definite motion speed ratio between moving; Whenever after processing a tooth, gear is made 1/z circle calibration, reprocesses next tooth, like this, can well realize the processing of gear; Can process positive circular tooth gear or oblique circular tooth gear by the distance between blade gyration center and the wheel blank intermediate cross-section.Opposite position is provided with some attachment holes 15 that match with attachment post 13 on the two knife rest dishes, and attachment post 13 is packed in the attachment hole 15 of different mutual correspondences, can realize the curved tooth processing of different tooth trace radiuses.
Fig. 5 is multitool sheet 9 processing devices of processing transverse tooth thickness arc cylindrical gear such as circumferential, comprise the knife rest dish 11 that two axle center fix, two knife rest dish axle center all are arranged on the support 14, be provided with connecting rod 12 between the knife rest dish 11, connecting rod 12 two ends are movably connected in respectively on the two knife rest dishes 11, connecting rod 12 parallels with line between two knife rest dishes, 11 axle center, and connecting rod 12 upper edge connecting rods 12 directions are evenly equipped with some blades 9.Adopt the multitool sheet to process whole gear with generating method, 9 distances of blade are set to the multiple of π m (m is a module) or π m; Teeth groove of each blade 9 processing during cutting, several blades 9 just can be processed whole gear continuously; Connecting rod 12 and blade 9 can be seen as the curved tooth tooth bar that is meshed with processed arc cylindrical gear 8.
Claims (6)
1, a kind of arc cylindrical gear, its tooth trace are the parts of circular arc, and flank profil is involute or circular arc, it is characterized in that: the transverse tooth thickness of arbitrary position equates on the circumferential direction of gear.
2, arc cylindrical gear according to claim 1 is characterized in that: described tooth trace is the positive circular arc along the intermediate cross-section symmetry of gear.
3, arc cylindrical gear according to claim 1 is characterized in that: described tooth trace is the asymmetric oblique circular arc along the intermediate cross-section of gear.
4, a kind of processing method of arc cylindrical gear as claimed in claim 1 is characterized in that comprising the steps:
(1) fixing wheel blank makes wheel blank make circular movement along the wheel blank axle center, and adjusts the distance of wheel blank center to knife rest according to the reference radius of wheel blank;
(2) blade that will process profile of tooth is fixed on the knife rest, make blade with plane that the wheel blank axle center parallels in do rotation motion, the rotation motion radius equals gear tooth trace radius, and blade work basal plane normal direction is remained unchanged;
When (3) blade is done rotation motion, the wheel blank rotation, knife rest or wheel blank make between wheel blank and the blade and realize generating method for tooth-cutting in the tangential feed of Gear Processing engagement place, can obtain arc cylindrical gear.
5, a kind of processing device of arc cylindrical gear, it is characterized in that: comprise two relatively-stationary knife rest dishes in axle center, be provided with connecting rod between the knife rest dish, the connecting rod two ends are movably connected on the two knife rest dishes by attachment post respectively, connecting rod parallels with line between the two knife rest dish axle center, is fixed with at least one blade on the connecting rod.
6, the processing device of arc cylindrical gear according to claim 5 is characterized in that: opposite position is provided with some attachment holes that match with attachment post on the described two knife rest dishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100412972A CN100335821C (en) | 2004-06-15 | 2004-06-15 | Curved teeth cylindrical gear, machining method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100412972A CN100335821C (en) | 2004-06-15 | 2004-06-15 | Curved teeth cylindrical gear, machining method and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1584371A CN1584371A (en) | 2005-02-23 |
| CN100335821C true CN100335821C (en) | 2007-09-05 |
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| CNB2004100412972A Expired - Fee Related CN100335821C (en) | 2004-06-15 | 2004-06-15 | Curved teeth cylindrical gear, machining method and apparatus thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890540B (en) * | 2010-07-16 | 2012-07-04 | 扬州大学 | Method for processing curve-tooth cylindrical gear |
| CN101982277A (en) * | 2010-11-25 | 2011-03-02 | 天津第一机床总厂 | Numerical control curve cylindrical gear miller |
| CN103203647B (en) * | 2013-04-02 | 2016-04-13 | 四川大学 | A kind of translation processing unit (plant) of arc tooth cylindrical gear |
| CN103727206A (en) * | 2014-01-20 | 2014-04-16 | 宋爱平 | Elliptical toothed-trace cylindrical gear and processing method thereof |
| CN104482165B (en) * | 2014-11-17 | 2017-09-26 | 扬州大学 | A kind of two-way camber line roller gear |
| CN105397203A (en) * | 2015-12-14 | 2016-03-16 | 南京工业大学 | Helical tooth scraping cutter for numerical control powerful tooth scraping machining |
| CN114893551A (en) * | 2022-04-28 | 2022-08-12 | 扬州大学 | Cylindrical gear with planar spiral tooth trace, machining device and machining method of cylindrical gear |
| CN115889899B (en) * | 2023-03-08 | 2023-05-12 | 四川大学 | Processing machine tool and processing method for circular-arc toothed-line cylindrical internal gear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047137A (en) * | 1990-04-13 | 1990-11-21 | 王国础 | Arc cylindrical gear and processing method |
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2004
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047137A (en) * | 1990-04-13 | 1990-11-21 | 王国础 | Arc cylindrical gear and processing method |
Non-Patent Citations (2)
| Title |
|---|
| 与阿基米德螺旋平面齿轮啮合的弧齿线圆柱齿轮齿形研究 高本河，吴序堂，王世清，机械科学与技术，第17卷第6期 1998 * |
| 弧齿圆柱齿轮加工的新方法 寇世瑶，刘明宝，武良臣，现代制造工程，第9期 2002 * |
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| CN1584371A (en) | 2005-02-23 |
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